Form for making pouches



Nov. 30, 1937. A. N. SPANEL 2,100,574

FORM FOR MAKING POUCHES Filed Aug. 31, 1954 5 Sheets-Sheet 1 III/I/I/ INYENTOR 116W 1% figaa nel B Y Nov. 30, 193 7.

A N SPANEL 2,100,574

FORM FOR, MAKING POUCHES Filed Aug. 31, 1934 3 Sheets-Sheet 2 F i/L911.

III/I firmly}; duel %Z'SATTORNEY NOV. 30, 1937. A N SPANEL FORM FOP. MAKING POUCHES Filed Aug. 51, 1934 3 Sheets-Sheet 3 INVENT M TY 'ORNEY Patented Nov. 30, 1937 UNITED STATES PATENT OFFICE FORM FOR MAKING PoUcnEs Abraham N. Spanel, Rochester, N. Y.

Application August 31,

8 Claims.

7 This invention relates to forms for making latex pouches.

The main feature of the invention resides in v a form for making a seamless deposited latex pouch having a locking strip integral therewith.

Another feature of the invention relates to a form for making a seamless deposited latex pouch provided with an integral locking strip, certain of the edges of said pouch being reinforced by an accretion of latex.

These and other features of the invention will appear from the detailed description and claims when taken with the drawings in which Fig. 1 is a plan view and Fig. 2 is a side view 15. with a part broken away of a form on which a latex pouch can be deposited; Fig. 3 is a sectional View of the sametaken on the line 3-3 of Fig. 1; Fig. 4 is a plan view of a form on which a modified pouch can be deposited; Fig. 5 20 is a fragmentary edge view of this last-mentioned form; Figs. 6 and 7 are fragmentary sectional views of the same taken respectively on the lines 6-6 and 1-1 of Fig. 4; Fig. 8 is a plan view of a form on which a still further modified pouch can be deposited; Fig. 9 is a fragmentary edge view of this form, while Fig. 10 is a sectional view thereof taken on the line |0-l0 of Fig. 8 and also indicating in cross section a deposited layer of latex on the form; Fig. 11 is a plan view of a form on which another type of pouch can be deposited; Figs. 12 and 13 are respectively sectional views of this form with deposited layers of latex indicated in cross section thereon, these sections being taken respectively on the lines l2l2 and l3l3 of Fig. 11; Fig. 14 is a plan view of a still further modified type of form; Fig. 15 is an enlarged fragmentary View of the same; Fig. 16 is a fragmentary edge view of this form on the same scale as that shown in Fig. 14; Figs. 17, 18, 19 and 20 are sectional views of this form taken respectively on the lines l1-ll, l8l8, l9-l9 and 20-20 of Fig. 15.

One type of pouch can be made on the form 44 shown in Figs. 1, 2 and 3. This form has rounded edges 45 except for its lower port-ion which terminates in an abrupt edge 41 in the plane of the surfaces of the form. On one face theform is provided with a panel 45 defined- 1934, Serial No. 742,294

or an aqueous dispersion of rubber whilelheld by the fins 48' in a suitable supporting'rack. It will be understood; that in the course of the dipping operations a layer of latex'which'forms the pouch 5 (Fig. 3), is deposited on the form and at the same time a ridge or accretion ll of drawing the form throughthe opening in the pouch. The portion of the layer enclosed by the reinforcing ridge or accretion II is cutaway 20 in any convenient manner, leaving the 'reinforc ing ridge with a-cut edge. l

A modified type of pouch may be made on th form 50 illustrated in Figs. 4 to '7 inclusive. This form likewise has two flat surfaces connected by curved surfaces at the edge except at the lower portion of the form'where the form terminates in an abrupt edge 5! terminating in the plane of mentioned surfaces. This form at its lower end is provided with a pair of fins 52 adapted to 30 be received in a suitable rack for supporting a plurality of forms while they are being coated with latexj On one flat face of this form; there is provided a curved abrupt edge 52. This edge is defined by 'a portion of the lateral surfaces of the'form which fiares outwardly at 53 and 'by a surface which projects abruptly from the'form thereby providing a recess 54 adjacent the abrupt edge. As best shown in Figs. 4; and 5, theabrupt edge 52 communicates at its ends with circular recesses 55 provided in the form at each edge thereof.

In making a pouch on this form, the form is coated with latex preferably by dipping it'one or more timesinto a bath of latex while'sup- 45 ported in an upright position on a suitable rack (not shown) by'means of the fins 52. 'It will be understood-that in thecourse of the dipping operations a layer of latex of any desired thickness is thus deposited on the form. The latex will tend to accumulate as buttons in the recesses 55, while at the upper side of the abrupt edge 52 the latex will accumulate as a ridge "or accretion 2i somewhat similar in cross section to the cross section of one half a tear drop. Howe 55 ever, at the abrupt edge 52, the latex will tend to flow away therefrom leaving a line of weak- 7 ness in the layer but in the recess 54 the latex will accumulate as an angular ridge or accretion 23. In finishing the pouch, the latex layer is torn at the line of weakness developed by the abrupt edge 52 so that the ridges or accretions 2| and 23 terminate in torn edges. In the course of the dipping operation, the latex will also accumulate above the abrupt edge '51 to provide a reinforcing ridge or accretion similar to the ridge IU of Fig. 3. At the abrupt edge, a line of weakness exists in the layer so that the excess portion thereof covering the lower end of the form and the fins 52 can be torn away at this line leaving a torn edge for the'reinforcing acabruptlower edge 6| terminating'in the plane of the surfaces of the form and being 'provided'at its lower end with pins 82 for engagement with a supporting rack (not shown). On one 'face of the form however, there is' provided'a panel 63 of flattened elliptical outline projecting abruptly from its junction with the form'to define a recess 64 and terminating in an" abrupt edge The major axis of this panel is parallel to the abrupt edge 6! of the form.

In making a pouch on the form 60, a layer of liquid latex 26'is deposited .thereon and'anaccreted reinforcement 28 is developed above the abrupt edge 6| in the manner previously set forth. In the courseof the depositing of the latex layer on the form, the latex will accumulate as a reinforcing accretion 3| in the recess 64 but a-jline of weakness will develop at the abrupt edge 65. After the latex layer is properly dried and/or cured, the portion within the mentioned line of weakness is torn away. The excess portion of the layer on the lower end of the form is removed as far as the abrupt edge 61 to provide the torn or cut edge 29. r

A pouch 35 can be made on the form 10 of Figs. 11, 12 and 13. This form is the same as that just described except for the means providedfor making the lateral opening or slit in the resulting pouch. This means comprises a sharp ridge H on one side of the form which ridge is surrounded by a groove 12 in the form.

' In the making of a pouch on this form, a layer of liquidlatex is deposited on the form as previously described. The layer will accumulate in the groove 12 as indicated at 4|. However, a line. of weakness will develop in the deposited layeratthe sharp edge H so that the slit can be made in the layer by tearing along this line.

The remaining operations of completing the pouch will be obvious from the foregoing description.

1A pouch somewhat similar to the pouch deposited on the form illustrated in Figs. l, 2 and 3, 'can' be made on the form 80 illustrated in Figs. '14 to'20 inclusive. This form may be generally 'flat with rounded top and sides edges, while its lower portion is provided with .an abrupt edge 8| or'any other suitable means for defining an: end opening in the pouch. Thelower portion panel which may be substantially flush with the surface of the form is defined by the grooves 84 r at the sides of the panel and by the depressed or cut away portions 35 and 86 at the ends of the In making a pouch on this last-mentioned type r of form, a layer of latex 8'! is deposited on the form as previously described. The layer will accumulate by surface tension as indicated at 89 in the depressed or cutout portions 85 and 86 so that a reinforcement is provided in the deposited layer. accretion of latex 89 deposited at the intersection of-two' surfaces of the form which ridge merges with a ridge or accretion 88 deposited in the grooves cut in the form. The latex will also ac- This reinforcement comprises a ridge or cumulate as a reinforcing ridge or accretion 93 above the abrupt edge 8|, while a line of weakness will develop in the deposited layer at the abrupt edge 3!. After the latex has been deposited on the form in the manner described and has'been dried and/or cured, the excess portion of the layer on the lowerend of the form is stripped or torn away as far as 'the abrupt edge 8| The pouch is then removed from the form by withdrawing the form through the end opening in' the pouch which. has been developed by stripping away the excess portionof the layer; A lateral opening is then made in the pouch by cutting, clicking, stamping or otherwise removing the portion of the layer which was deposited on the face of the panel and withinthe reinforcements 88 and 89 as far as the dotted lines 90 of" Fig; 17 and the'dotted line 9| of Fig. 20.

While severalemb'odimentsof the invention have been disclosed, it will be'understood'that this invention is capableoi still further mod ifications and that this disclosure is intended to cover any'variations, uses or adaptions of the invention falling within the scope, ofthe ap-' pended claims. J

What I claim is: 7 1. A form for making a seamless deposited latex pouch, one end of said form terminating in an abrupt edge substantially in the plane of a main surface of the form, one'of the surfaces only of said form being provided with a'recess remotely located with respect to said edge and having its long axis substantially'parallel to said edge, the surface of the form between'said recess and said edge being free of recesses. r 2. A form for making a deposited seamless latex pouch, the lower portion of said form being provided with means to accumulate a reinforcementof latex,one of thesurfaces of said form being provided with a panel boundedin part by a recess, said panel having its major axis gen-. erally parallel to said means. 7

3. A form 'for making a deposited seamless latex pouch, one end of said form being provided with means to accumulate a Nreinforcement-of latex, one of the surfaces of said form being provided with a panel havinga raised marginrand bounded by a recess, said panel having its major axis generally parallel to saidmeans.

4. A form for making a deposited seamless latex pouch, one end of said form being provided with means to accumulate a reinforcement of latex, one of the surfaces of said form being'provided with a curved ridge spaced a substantial distance from said means, the portion of said surface between said ridge and said means being free from ridges.

5. A form for making a deposited seamless latex pouch, one end of said form being provided with an abrupt edge in substantially the plane of the surface of the form to accumulate a reinforcement of latex, one of the surfaces of said form being provided with a curved ridge, said ridge being defined by a surface projecting abruptly from said form.

6. A form for making a latex article, said form having a panel defined by a depressed area in the form merging with a groove in the form.

'7. A form for making a deposited seamless latex pouch, the lower portion of said form being provided with means to accumulate a reinforcement of latex, one of the surfaces of said form being provided with a. panel enclosed by a recess, said panel having its major axis generally parallel to said means, the surface of said form proper and said panel curving into said recess.

8. A form for making a deposited seamless latex pouch, the lower portion of said form terminating in an abrupt edge in substantially the plane of the main surface of the form, one face of said form being provided with a panel enclosed by a recess, the surface of said form proper and said panel curving into said recess, said panel having its major axis generally parallel to said edge.

' ABRAHAM N. SPANEL. 

